Hope this will answer some questions that a few have had.
This stock has the bdl chassis. It adds about 6.5 ounces per manners website, but gives the action a rock solid bed that can be bolted action to action.
I'm attaching some pictures to show the fit in the tang area. It may not give that perfect aesthetic look where it blends right into the stock, but it certainly doesn't cause any issues with its feel and function during use.